About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsDiscrete Semiconductor ProductsDiodes - Zener - SingleJANTX1N3306B
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

JANTX1N3306B - Microchip Technology

Manufacturer Part Number
JANTX1N3306B
Manufacturer
Microchip Technology
Allelco Part Number
98D-JANTX1N3306B
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
3,836 pcs available, New & Original
Parts Description
ZENER DIODE
Package
DO-5
Data sheet
JANTX1N3306B.pdf
RoHs Status
 
Compare
Our certification
In stock: 3836

Required fields are indicated by an asterisk (*)
Please send RFQ, we will respond immediately.

Quantity

Specifications

JANTX1N3306B Tech Specifications
Microchip Technology - JANTX1N3306B technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - JANTX1N3306B

Product Attribute Attribute Value
Manufacturer Microchip Technology
Voltage - Zener (Nom) (Vz) 7.5 V
Voltage - Forward (Vf) (Max) @ If 1.5 V @ 10 A
Tolerance ±5%
Supplier Device Package DO-5
Series Military, MIL-PRF-19500/358
Power - Max 50 W
Product Attribute Attribute Value
Package / Case DO-203AB, DO-5, Stud
Package Bulk
Operating Temperature -65°C ~ 175°C (TJ)
Mounting Type Stud Mount
Impedance (Max) (Zzt) 0.3 Ohms
Current - Reverse Leakage @ Vr 125 µA @ 5 V

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
REACH Status REACH Unaffected
ECCN EAR99

Frequently Asked Questions(FAQ)

What are the key design considerations when using the JANTX1N3306B Zener diode in a high-power voltage regulation application?
The JANTX1N3306B is rated for 50 W maximum power dissipation with a 7.5 V Zener voltage and ±5% tolerance, making it suitable for high-reliability, high-current regulation. Due to its stud-mount DO-5 package, thermal management is critical—engineers must ensure adequate heatsinking to maintain junction temperature below 175°C under continuous load. The low dynamic impedance of 0.3 Ohms helps maintain tight regulation under varying load currents, but transient thermal response must be evaluated, especially in pulsed or surge-prone environments. Military-grade qualification (MIL-PRF-19500/358) supports use in harsh environments, but derating above 125°C ambient is essential to avoid premature failure.
How does the reverse leakage current of the JANTX1N3306B compare to similar 7.5 V Zener diodes in its class?
The JANTX1N3306B exhibits a reverse leakage current of 125 µA at 5 V, which is typical for high-power Zener diodes in the DO-5 package. While lower-leakage alternatives exist in lower-power or precision Zener families, this value is acceptable for high-power regulation where leakage is a secondary concern compared to surge handling and thermal stability. The leakage remains relatively stable across the operating temperature range, though it increases slightly near the upper limit of 175°C, which should be factored into low-current sensing or bias network designs.
Can the JANTX1N3306B be used in parallel with another Zener diode to increase current handling?
Parallel operation of the JANTX1N3306B is not recommended without current-sharing measures. Due to the negative temperature coefficient of Zener voltage near 7.5 V, one device may conduct more current as it heats, leading to thermal runaway. Even with matched units, minor variations in Zener voltage (±5% tolerance) can cause significant current imbalance. If higher current capacity is needed, a single higher-power Zener or active regulation circuit is preferred over paralleling multiple JANTX1N3306B devices.
What is the significance of the ±5% Zener voltage tolerance in practical circuit design for the JANTX1N3306B?
The ±5% tolerance on the 7.5 V Zener voltage means the actual breakdown can range from 7.125 V to 7.875 V. In precision regulation applications, this may require post-assembly calibration or the use of a trimming network. However, in power supply clamping or overvoltage protection roles—common for a 50 W device—this tolerance is typically acceptable. Designers should ensure downstream circuitry can tolerate this variation, especially in feedback loops or reference-dependent systems.
How does the forward voltage drop of the JANTX1N3306B impact its use in bidirectional protection circuits?
The JANTX1N3306B has a forward voltage (Vf) of 1.5 V at 10 A, which is relatively high compared to standard rectifier diodes. In bidirectional TVS or clamping applications, this elevated Vf increases power dissipation during positive transients and may require additional thermal derating. While the device can conduct in forward bias, its primary design intent is Zener regulation; thus, relying on it for symmetric clamping may compromise efficiency and thermal performance compared to dedicated bidirectional suppressors.
What thermal resistance should be expected when mounting the JANTX1N3306B to a heatsink, and how does it affect derating?
Although the datasheet does not specify thermal resistance directly, the DO-5 stud package typically exhibits a junction-to-case thermal resistance (RθJC) in the range of 1.0–1.5°C/W when properly mounted with thermal interface material. To maintain safe operation at 50 W, a heatsink with thermal resistance below 0.5°C/W is often required, depending on ambient conditions. Derating should begin above 25°C ambient, with power handling reduced significantly near the 175°C maximum junction temperature. Military applications often mandate derating to 50–60% of rated power at elevated temperatures.
Is the JANTX1N3306B suitable for use in aerospace power systems, given its military qualification?
Yes, the JANTX1N3306B meets MIL-PRF-19500/358 standards, indicating it has undergone screening for high-reliability applications, including aerospace. Its operating temperature range of -65°C to 175°C and robust DO-5 construction support use in extreme environments. However, system-level qualification, radiation tolerance (if applicable), and long-term reliability under thermal cycling must still be validated, as the component-level qualification does not guarantee system performance under all mission profiles.
How does the dynamic impedance of 0.3 Ohms influence voltage regulation accuracy under varying load currents?
The 0.3 Ohm dynamic impedance (Zzt) of the JANTX1N3306B means that for every 1 A change in Zener current, the regulated voltage shifts by approximately 300 mV. In a 50 W application with a Zener current swing from 1 A to 6.67 A (at 7.5 V), this could result in up to 1.7 V of voltage variation if not managed. Therefore, maintaining a relatively stable Zener current through proper series resistance or active biasing is essential for tight regulation, especially in precision or low-noise power systems.
What are the risks of operating the JANTX1N3306B near its maximum power rating without active cooling?
Operating the JANTX1N3306B at or near 50 W without effective heatsinking can lead to rapid junction temperature rise, potentially exceeding the 175°C limit within seconds under high ambient temperatures. This may cause thermal runaway, accelerated aging, or catastrophic failure. Even brief overloads can degrade the semiconductor structure over time. Engineers should implement thermal monitoring or foldback current limiting in systems where sustained high-power operation is expected, particularly in enclosed or high-temperature environments.
How does the JANTX1N3306B compare to a modern TVS diode for overvoltage protection in a 7.5 V rail?
While both the JANTX1N3306B and a TVS diode can clamp overvoltage, the JANTX1N3306B offers higher continuous power handling (50 W) and better long-term stability under sustained overvoltage, making it suitable for rugged power systems. However, TVS diodes typically respond faster to nanosecond-scale transients and have lower clamping voltages for the same breakdown. For fast ESD or lightning-induced surges, a TVS may be superior; for sustained overvoltage or crowbar applications, the JANTX1N3306B provides more robust energy absorption.
Can the JANTX1N3306B be used in a crowbar circuit, and what design precautions are necessary?
Yes, the JANTX1N3306B is well-suited for crowbar overvoltage protection due to its high surge capability and stable Zener characteristics. When the voltage exceeds ~7.875 V (upper tolerance limit), it can trigger a thyristor to short the supply. However, the 50 W rating implies significant current will flow once triggered, so the fuse or circuit breaker must interrupt fault current quickly. The low Zzt (0.3 Ohms) ensures sharp turn-on, but the system must handle the resulting short-circuit energy without damage to adjacent components.
Why is the JANTX1N3306B non-RoHS compliant, and what implications does this have for modern system design?
The JANTX1N3306B is non-RoHS compliant, likely due to lead-containing materials in its construction, which is common in military and high-reliability components. This restricts its use in consumer or commercial products requiring full RoHS compliance. However, for defense, aerospace, or industrial systems with exemptions or legacy compatibility needs, this is not a barrier. Designers must ensure proper documentation and supply chain controls to manage obsolescence and regulatory constraints in regulated industries.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology JANTX1N3306B

Product Attribute JANTX1N3306RB JANTX1N3305RB JANTX1N3310B JANTX1N3308RB
Part Number JANTX1N3306RB JANTX1N3305RB JANTX1N3310B JANTX1N3308RB
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Mounting Type - Surface Mount Through Hole Surface Mount
Tolerance - - - -
Power - Max - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Zener (Nom) (Vz) - - - -
Current - Reverse Leakage @ Vr - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Impedance (Max) (Zzt) - - - -
Voltage - Forward (Vf) (Max) @ If - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C

JANTX1N3306B Datasheet PDF

Download JANTX1N3306B pdf datasheets and Microchip Technology documentation for JANTX1N3306B - Microchip Technology.

PCN Assembly/Origin
Manufacturing Change 23/Feb/2021.pdf
Environmental Information
Microchip CA Prop65.pdf Microchip REACH.pdf Microchip RoHS.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

  • Embe***dMotion
    Aug 5, 2026

    Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

  • FPGA***dio
    Jul 30, 2026

    This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

  • Nord***mbedded
    Jul 20, 2026

    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
Quality Inspection Image - 01
Quality Inspection Image - 02
Quality Inspection Image - 03
Quality Inspection Image - 04

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
Microchip Technology

JANTX1N3306B

Microchip Technology
98D-JANTX1N3306B

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB